Indenturing machine



Dec. 7 1926. 1,609,461

c. c. CARPENTER INDEN'IURING MACHINE F e y 9, 1923 2 Sheets-Sheet 1fizvenior 625m? [Wt/2Z6) l r 1 I I C. C. CARPENTER INDENTURING MACHINEDec. 7 1926; 1,609,461

Filed July 9, 1923 2 Sheets-Sheet 2 3 panying-drawings, in whichPatented Dec. 7, i926.

CLYDE CONVERSE CARPENTER, or CHICAGO, rumors, ssIe-No'n rownsrnzan ELEC-maio COMPANY, mooaroaarnn, on NEW YORK, n. n, A ooaeo'narrouor new IYORK.

iNDENTURING MACHINE.

Application filed July 9, 1223. Serial no. 550,297.

This invention relates toindenturing machines, and more particularly'toamachme for indenturing articles which are capable of being rolled. V ihere it is desired to indent a large part of the surface of an .articleby rolling it between inclenturing dies, it is desirable to keep itsaxis of rotation parallelto that of the indenturing member, when thatmember is rotatable. Also, it is often required to indent part of anobject only, which part may be .itself rollable, but the. article mayhave some peculiar feature of construction, such as a projection, whichwould interfere 1 with its free rotation, or with means forguidingitthrough a machine. f An object ofthe present"nvention is toindent :any surface of a rollable article. 7

Another object-is to improve, and amplify the range of use of, anindenturing machine. In order to attain these objects, there isprovided, in accordance with one feature of the invention, a fixed andiamovable inden- 2 turing member, and 'work holders which are .heldinalignment by means of gears.

These, and other features of the invention not specifically mentioned,will appear from the following description I and the accom- Figure 1 isa view in front elevation of a device made in accordance with oneembodiment of the invention and adapted tomount on a lathe or othersuitable machine;

Fig. 2 shows a vertical, longitudinal sec tion of a partof Fig.1;

Fig. 3 shows a section on Fig. 1, and 7 Fig. 4 is a planlvi ew ofmechanismwith parts, including the idler gear,broken away; r p Inreferring to'the drawings in detall, the

' same number will be used to designate the samepart throughout, butwhere a part on p one sideof the .structure is virtually/the same as thecorresponding part" on the other, the same character will be used .todenote both.

ed for indenturing or knurling solid stock,

the invention is susceptible of other uses and is to belimited only bythe spirit as arbor 30 maybe mounted so that one part, or all, of theperipheral matinee?) of end is driven by the spindle of a machine, suchas a lathe'or jmilhng machine (not shown), while the other end thereofmay be rotatably supported by a center, or a head rest, as is customaryin such machines.

1 Mounted upon this arbor, and keyed to it, are bushings 32 on eitherside of a rotatable indenturing member 84 which is alsocarried by, andkeyedto, the arbor 3O. 7

Riding upon the bushings 32 are guide members 46, which are disco'idmembers of metal having an annular flange .72 projecting fromtheinner'face of each, and depressions '50 in their peripheries tov holdblanks during their indenturin'g. In two depressions'in the outerfac'eof each guide 'member are afiixed tubular spacing members 44:, bymeans of screws 4:8. Within each'of these spacing 'membersis a coiledspring 42, which is compressed, upon assembly, by gears 4 0, which alsoride'upon the bushing 32 and areheld in place by" collars 36 which aresecured to the bushings 32by set screws 88. The spacers seat in holesdrilled in the faces of the gears to receive them. It is apparent thatthis method of construction will cause the guide members 46 to be forcedinto intimate contact with the plates'of the bushings 32 by the actionof the springs42, and

' give a friction drive between these two members. 1 I r A fixed die 52,or indenturing member, the'upper surface of which is an 'arcuatedepression which maybe indentured andhardened, is supported on eitherside by the'parallel vertical faces of two members 10, which areconnected'to the fixed indenturing mem- 1 her 52 by means of screws '54,riding in elongated holes inmember 10;

Means for ad'usting the po '-t ion of member; 5215' provided in: screws"56, which screw into holes drilled andtapped in projections extendingfrom members 10, these screws being supplied ,with locknuts '58 forsecuring them after adjustment. I The holes in pr'0jections"60. aredrilled so that'their center lines are on radii from the axis of the p vp arbor 30. 7 Although theembodiment of the invention .50 shown inthedrawing isparticularly adapt- The horizontal portions'of memberslO' areprovided with means to afiix them to the bed of the dominant machine,where the device is'used with sucha machine andfmay consist ofbed bolts12. It is apparent'that the-- mechanism may be made complete in itselfby supplying 'suitable supporting means, and

motive power for the arbor. Uprightsupports 18 for an idler gear 22 areconnected 'to -members .10 by bolts 1.4, the heads of which ride invlongitudinal grooves in the bottom-of platelO, the gear extends acrossthe machine and meshes with both gears 40 and serves to keep these gearsin step, and since they are secured tothe sleeves 32 carrying discoidguide members 46 serves likewisetorkeep the depressions 50 of such guidemembers in perfect alignment, th :upright when .then1achine .is set upas in Fig. 4.

The {portion 1 of these upright 'members is atrright angles itortherest, and on the :lower side of the base oteach is cut agroove, whichrides ionpa guide ridge .24: :to align 1thes,e;m,embers,-:and thus;insure alignment of the bearings which they support.

Extending :from the face of-the vertical portion of each of the members10 is a tritan'gular ;pro'j cation 62, which serzves'tocarry theindentured articles free" ofthe machine when-they drop fromthedepressions in'the :fie'ld members i after clearing the lower ed geOf'tlle arcuate. depressioniin the'fixedzindenturing amember.

On the rear of teach i of the vertical per- "tions of the :members'lO,byaneansofbolts '66, are =aflixed members 64, which form a chute downwhich are fed the ,blanks to be aindented.

In operating the device, :there are assembled upon an arbor 30, 11' themanner previously described, a rotatable indenturing .member 34,,bushings '32,;gu1deimembersitl,

I gears-:40, and :c0llars36. Theilength of the spacers, the-size of thedepressions in :the

' :guide members, the size vand shape of the indenturin g members, :aswell ,as the nature of the indenturing surfaces, are to'be deten minedby the requirements'of the work to be performed.

loosely-assembled with the members 10-and these members areaflixedtothebedofthe A fixed 7ndenturing member 52 ElS thenmachine'by-thebolts12. I "Slippinguan uprightbearing member over eachendof itlle arbor v30 -it .-.is then;m0unted nthe dominant;machlneas'described ,above,

and the clearance between the indenturing members is ad usted by means'ofthejscrews idler .-gear;22 is :then put in place andiche vup ri5 htbear ng support members :18: are se- -:cured in place by the bolts 514;.

. ,After placingxasupply of blanks 7 0 the .feedwchute, the device maybe operated by 7 starting the machine with which it isassociatedytheblanks are ,illustratedas comprising screw drivers, thehandles of which are made of solid stock and are knurled throughouttheir "length during the opera-- tion ot'the machine. The feed-memberswill be revolved by the friction drive and as a depression "50 presentsitself to the bottommost blankin the feed chute, the blank drops intothe depression and is carried'down by the feed members which are,rotated by the friction drive between the plate 32 and gthe indenturingmembers.

As the blank is gripped between the two indenturing members it isadvanced by being rolled between them, althoughitis still held [inalignment by the guide members,

since the flangeextending from the face of eaclrofthemembers.projectsinto the space betweenthe,indenturing members thus mak-.ing it ,possible to employ an indenturmg member as long as "the articlewithout interierencefromthe.guldemeans. jIn accordance with a welLknownrprinciple oifrolling objects, the rateof advance of the object is onlyone-half theitangential peed ofits periphery, hence there must be 'aslippage between .thei'bushingplate 32, which 'isrotating at the samerateas 'thecindenturing member, andthefguide.members146, which musttravel at thespeed of the blank, and this slippage \is permitted by .thefriction drive between the guide members and :the plates otthebushings'When the blank, whichis ,by then fully indentured, clears the lower endof the arcuatesurface voith fixed id-ie, it drops onto the slantingupper surfaces- -ofproject-ions .62, which carry it down and away from.the machine into any suitable storage receptacle (not shown).

What lSiClElllllBCllSI I V V 1. Ina mach ne for m'aking indentures, a

rotary indenturing member, a blank supportingelement associatedtherewith, and a gpaiinof guiding devices mounted at opposite sides ofsaid indenturing member. 7

2. 111. a. mach ne .fonmaking indentures, a rotary indenturing member,a'hlanksupport associated therewith, and a .pair (of rotaryguidingimembers mounted at opposite s d es of the indenturing member. py

In a :machine for making ,lndentnres, a rotary :indenturing member, ablank supporting element ,coeoperating therewith; a pair .ot rotaryblank ieeding ;memb'ers mounted ..e aXial 1y with respect to the;'indenturing member ,and at" opposite "sides thereofl and a frictionaldriving connection between :the lndenturing member and said V guidedevices.

A. :In a machine for making ind Ventures,

an indenturingl-member, .-mea'ns tor rolling Ianzart cleracrosszthendenturmg member to indent the article, a plurality --of discoid,members,-ea cl1, havingan annularfflange projecting over theindenturing member, de-

members to guide an article during indenturing, and means to maintainalignment of said depressions.

5. In a machine for making indentures, an indenturing member, means forrolling an article across the indenturingmember to indent the article,discoid members associated with the indenturing member and havingdepressions in their peripheries to guide an article during indenturing,an idler gear having a driven connection With each guiding member, andan idler gear meshing with these gears to maintain alignment of saiddepressions.

6. In a machine for making indentures, an indenturing member, means forrolling an article across the indenturing member to indent the article,discoid guiding members 2 associated with the indenturing members,

having depressions in their peripheries to guide an article duringindenturing, a gear associated with each guiding member, tubular spacingmembers between each guiding member and ts associated gear, a sprlngwithin each spacing member to force the guiding member inward, and anidler gear to mesh with the aforesaid gears to hold the V depressionsinalignment.

7. In a machine for making indentures, an indenturing member, means forrolling an article across the indenturing member to indent the article,discoid guiding members having each an annular flange, with depressionstherein, projecting over the indenturing member to guide an articleduring indenturing, and frictional driving means connecting theindenturing member and the guiding members.

In witness whereof, I hereunto subscribe my name this 27 day of June A.D., 1923.

' CLYDE CONVERSE CARPENTER.

